A pentagonal prism has five lateral faces and two pentagonal bases, which equal seven faces. A prism has two congruent polygons that form the top and bottom of the shape. These polygons are referred to as bases. The remaining sides are referred to as lateral faces.
The lateral faces sides of the prism are composed of rectangles. Prisms are named based on the shape of their bases. A pentagonal prism has pentagons as the top and the bottom. It is a right prism since the faces of the rectangles meet the base pentagon at right angles. It has seven faces, 15 edges and 10 vertices.